using System; using System.Collections.Generic; namespace FL { public static class MathUtils { /// /// 传递一个概率值(1-10000),返回随机结果是否在概率内 /// /// 1-10000 /// 最大值 /// public static bool Random(int probability, int maxExclusive = 10000) { //零固定返回false if (probability <= 0) return false; if (probability < maxExclusive) { var random = UnityEngine.Random.Range(0, maxExclusive); return random < probability; } return true; } /// /// 传递一个权重数组,返回随机结果对应的索引 /// /// /// public static int Random(IList weights) { var total = 0; foreach (var weight in weights) { total += weight; } if (total <= 0) { return 0; } var random = UnityEngine.Random.Range(0, total); var temp = 0; for (var i = 0; i < weights.Count; i++) { temp += weights[i]; if (random < temp) { return i; } } XGame.Log.Error($"随机数错误。total:{total} total:{random}"); return 0; } /// /// 毫秒转指定格式的时间字符串 /// /// /// 字符串格式, 例: @"mm\:ss" /// public static string ToTimeString(this long milliseconds, string format) { var timeData = TimeSpan.FromMilliseconds(milliseconds); return timeData.ToString(format); } } }